Thru-Hull Fittings

Build dependable connections through the hull.

Shop marine thru-hull fittings, boat thru-hulls, bronze thru-hull fittings, stainless steel thru-hulls, composite thru-hulls, hose connections, threaded fittings, drain fittings and thru-hull accessories for sailboats, powerboats, fishing boats, cruisers, yachts and other marine applications.

Make the connection. Build it for the water. Adventure Starts Here.

107 products

  • GROCO Stainless Steel Hose Barb ThruHull Fitting 58 HTH625S
    GROCO Stainless Steel Hose Barb ThruHull Fitting 58 HTH625S
    Save $0.01 USD
    GROCO

    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 5/8" [HTH-625-S]

    $34.99 USD
    $34.99 USD $35.00 USD

    Stainless Steel Hose Barb Thru-Hull Fitting - 5/8" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 5/8" Material: Stainless Steel...
  • Perko 118 ThruHull Fitting fHose Narrow Flange Plastic 0301DP6A
    Perko 118 ThruHull Fitting fHose Narrow Flange Plastic 0301DP6A
    Perko

    Perko 1-1/8" Thru-Hull Fitting f/Hose Narrow Flange - Plastic [0301DP6A]

    $16.76 USD
    $16.76 USD $0.00 USD

    1-1/8" Thru-Hull Fitting for Hose Narrow Flange - PlasticFeatures: Molded white Narrow Flange Specifications: Hose Size: 1-1/8" Mounting Hole Diameter: 1-5/16" Max. Hull Thickness: 1-1/2" O.D....
  • GROCO 34 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH750WS
    GROCO 34 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH750WS
    Save $0.01 USD
    GROCO

    GROCO 3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-750-WS]

    $21.99 USD
    $21.99 USD $22.00 USD

    3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP...
  • GROCO 1 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH1000WS
    GROCO 1 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH1000WS
    Save $6.01 USD
    GROCO

    GROCO 1" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1000-WS]

    $53.99 USD
    $53.99 USD $60.00 USD

    1" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP...
  • Perko 34 ThruHull Fitting fHose Plastic Narrow Flange 0301DP5
    Perko 34 ThruHull Fitting fHose Plastic Narrow Flange 0301DP5
    Perko

    Perko 3/4" Thru-Hull Fitting f/Hose - Plastic Narrow Flange [0301DP5]

    $8.86 USD
    $8.86 USD $0.00 USD

    3/4" Thru-Hull Fitting f/Hose - Plastic Narrow FlangeFeatures: Molded white Narrow Flange Specifications: Hose Size: 3/4" Mounting Hole Diameter: 1" Max. Hull Thickness: 1-7/16" O.D. Flange:...
  • Perko 112 ThruHull Fitting fHose Plastic MADE IN THE USA 0328DP8
    Perko 112 ThruHull Fitting fHose Plastic MADE IN THE USA 0328DP8
    Save $10.77 USD
    Perko

    Perko 1-1/2" Thru-Hull Fitting f/Hose Plastic MADE IN THE USA [0328DP8]

    $10.99 USD
    $10.99 USD $21.76 USD

    Perko 1-1/2" Thru-Hull Fitting for Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1-1/2 Mounting Hole Diameter Inches: 1-7/8 Maximum Hull Thickness Inches:...
  • Perko 1 ThruHull Fitting wPipe Thread Bronze MADE IN THE USA 0322DP6PLB
    Perko 1 ThruHull Fitting wPipe Thread Bronze MADE IN THE USA 0322DP6PLB
    Save $30.57 USD
    Perko

    Perko 1" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP6PLB]

    $56.99 USD
    $56.99 USD $87.56 USD

    Perko 1" Thru-Hull Fitting w/ Pipe Thread BronzeFlange is machined to fit hull and grooved to retain bedding compound. Neckis threaded to approximately 3/8 inch from...
  • Perko 34 ThruHull Fitting f Hose Plastic MADE IN THE USA 0328DP5
    Perko 34 ThruHull Fitting f Hose Plastic MADE IN THE USA 0328DP5
    Save $1.07 USD
    Perko

    Perko 3/4" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP5]

    $6.99 USD
    $6.99 USD $8.06 USD

    Perko 3/4" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 3/4 Mounting Hole Diameter Inches: 1 Maximum Hull Thickness Inches:...
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